Abstract
We introduce iterative noise whitening for belief propagation (BP) based channel detectors over inter-symbol interference (ISI) channels with correlated noise. Called noise predictive belief propagation (NPBP), the new scheme iteratively whitens the noise samples by modifying the edge probability computation of the BP algorithm. NPBP detectors based on finite impulse response (FIR) and infinite impulse response (IIR) prediction filters are introduced. In addition, we propose a novel prediction filter optimization method leading to a better noise whitening performance. Simulation results for both coded and uncoded systems and comparisons with maximum a posteriori (MAP) and BP detectors show that, significant improvements can be obtained.
Original language | English (US) |
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Title of host publication | IEEE International Conference on Communications |
Pages | 704-708 |
Number of pages | 5 |
Volume | 1 |
State | Published - 2005 |
Event | 2005 IEEE International Conference on Communications, ICC 2005 - Seoul, Korea, Republic of Duration: May 16 2005 → May 20 2005 |
Other
Other | 2005 IEEE International Conference on Communications, ICC 2005 |
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Country/Territory | Korea, Republic of |
City | Seoul |
Period | 5/16/05 → 5/20/05 |
ASJC Scopus subject areas
- Media Technology